Weighing-scoop



(No Modem 0. A. JOHNSON. WEIGHING SCOOP.

' No. 570,434. Patented 0013.27, 1896.

UNITED STATES PATENT OFFICE.

CHARLES A. JOHNSON, OF CHICAGO, ILLINOIS.

WElGHlNG-SCOOP.

SPECIFICATION forming part of Letters Patent No. 570,434, dated October27, 1896.

Application filed February 21, 1896- Serial No. 580,193. (No model.)

T0 at who/11 it may concern.-

Be it known that 1, CHARLES A. J oHNsoN,

a citizen of the United States of America, residing at Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Veighing- Scoops, of which the following is aspecification. i L My invention relates to certain improvements inweighing-scoops-that is to say, scoops adapted for handling ground orpowdered material and provided with means for indicating the weight ofthe material handled at each operation.

The invention is fully described and explained in this specification andshown in the accompanying drawings, in which Figure 1 is a sideelevation of a scoop embodyin g my improvements, the parts being intheir normal relation and the scoop being empty. Fi 3 is a top plan ofthe parts in the relation shown in Fig. 1. Fig. 3 is an enlargedvertical section of the device; and Fig. at is aview partly in top planand partly in approximately horizontal section, the plane of sectionbeing through line 4 4c of Fig. 1.

In the views, A is a scoop of ordinary form, and A is a handle providedwith a downward extension A the handle being approximately in the planeof the upper edge of the scoop and the end of the extension being hingedto the scoop at the lower angle thereof.

B is a clevis fastened to the handle A at a point approximately levelwith the upper edge of the scoop.

3 is an approximately vertical spindle journaled in the end of theclevis.

A spring C, preferably of the volute form, has its inner end fastened tothe spindle B and its outer end connected with the scoop near its upperedge, the relation of the parts being such that the downward movement ofthe free edge of the scoop with relation to the handle unwinds thespring to a certain extent, thereby overcoming a certain resistancewhich tends constantly to hold the spring in its normal form. Thetendency of the volute spring C is evidently to coil itself upon thespindle B, therefore when scoop is swung downward by the weight of thematerial placed therein it not only unwinds the spring, thus overcomingthe tension which the spring is given to remain in a coiled positionupon the spindle, but also straightens out that portion of the springwhich is unwound, the two forces of the spring thus assisting inbalancing the scales. The free end of the spring may be connecteddirectly with the scoop, thus doing away with any strap or secondarydevice for operating the spring, and therefore cheapening the device toa great extent. This unwinding of the spring rotates the spindle B, andwith it a needle I), fastened to the upper end of the spindle insuitable relation to an indicating-disk D, fastened to the upper arm ofthe clevis, as clearly indicated in the drawings. The disk beingsuitably marked with characters indicating weights, the rotation of theneedle indicates the weight of the material lifted by the scoop, andupon the discharge of the material from the scoop the needle returns toits normal position at zero on the disk. Between the downward extensionof the handle and the closed end of the scoop is a stop a, attachedeither to the scoop or to the handle and adapted to limit the movementof the scoop toward the handle.

The device thus described is extremelysimple and is consequently cheapand not liable to disrepair, and I have found in practice that itoperates with perfect correctness within the limits of the uses forwhich it is designed.

Having now described and explained my invention, what I claim as new,and desire to secure by Letters Patent, is-

1. The combination with the scoop A, of the handle A, having thedownward extension N, hinged to the bottom of the scoop, the elcvis B,secured to the handle and lying in an approximately vertical plane, aspindle B, journaled in the arms of the clevis, the indieating-needle,I), secured upon said spindle, the disk, D, and the volute spring C, oneend of which is secured upon the spindle the other end being secured tothe scoop, the downward movement of said scoop being adapted to unwindsaid spring thereby rotating the indicating-needle substantially asdescribed.

2. The combination with the scoop, A, of the handle A, having thedownward extension N, hinged to the bottom of the scoop, the stop a,limiting the upward movement of the scoop, the clevis, B, secured to thehandle and lying in an approximately vertical plane, thespindle.l3',j0urnzt1ed insztid clcvis,thcindiczttingspring'aud rotatingthe indiczlthlg-nvcdIv; needle Z), the disk, 1), and the Yolute springsubstantially as described.

( ,one end of Inch 15 eccnled npen the spln CHARLES A JOHNSON dle theother end belng attached to the scoop,

the downward movement of said scoop being \Vitnesses: adapted to uncoilsaid spring thereby over- CHAS. O. SHERVEY, coming a certain amount ofthe tension of said M. L. SHEAHAN.

